The Ryveem is a smaller River, which empties into the Arctic Ocean. In the lower reaches of the River is a large gold mine situated. The agates come from there. The agates are coloured grey to dark and show a classic fortifikation-banding in addition to gravitational formed agate. Here also agate in lithophysae ("Thundereggs") can be found.

After personal report of M. Egorov the discovery zone is situated approximately 69 ° 40' north and 178 ° 37' east.